Automatic car-stop.



PATENTED JAN. l, 1907.

J. s. PATBS. AUTOMATIC GAR sTol?.

APPLICATION FILED SEPT 1H: NaRRls PETERS x:o., wAsHlNcroN, s. r:4

UNITED sTATEs PATENT oEEroE.

Specification of Letters Patent.

Patented Jan. 1, 1907.

Application led September 8, 1906. Serial No. 333,795.

- Monongahela, in the county of Washington and State of Pennsylvania, have invented certain new and useful Improvements in Automatic Car-Stops, of which the following is a specification. n

This invention relates to a device for stop'- ping cars, particularly mine or pit cars; and` the primary object is to provide a stop which when not locked will be deflected by and not obstruct the car and when locked prevents the same from passing.

The improved device is designed especially for-coal-tipples, with the locking mechanism connected to the dumping track-section or platform and operated by the latter to lock the stop in car-obstructing positon only when the track-section or platform is tilted, thereby preventing the car from running into the tilted dump.

In the accompanying drawings, Figure l is a longitudinal sectional view of part of a tipple and its approach, showing the improved mechanism applied thereto. Fig. 2 is a top plan view of the same. Fig. 3 is a sectional view on line 3 3 of Fig. 2. Fig. 4 is a rear end view of the stop and lock. Fig. 5 is a detail view.

Referring to the drawings, 2 designates the base or oor of the car approach, and 3 the rails. 4 is the tilting track-section or dumping -platform. Approach 2 is formed with opening 2, and pivoted at 5 therein is the vertically-tilting stop-forming bar 6, having weight 7 suspended from its front or shorter end, which holds its longer rear portion normally raised. The top 6 of the bar is inclined upwardly from its weighted end, and when raised, as it is normally, itprojects into the path of running-gear 8 of the car, and with the bar unlocked or depressible against the pull of weight 7 the car simply depresses the stop-bar and passes thereover onto the dumping-platform. For locking bar 6 in raised or car-stopping position an arm 9 is movable between base 2 and the bar, the

arm bearing upon the base and bridging bar-recess 2, as shown in dotted lines in Fig. 2. Arm 9 is secured to pin or stud 10 rotatable in base 2 and provided on its lower end with arm 11, to which the weighted line 12 is connected, the latter operating to turn arm 9 forward or in stop-locking position.

Extending in the opposite direction from arm 11 is line 13, which is connected to l bracket 14, secured to the bottom of dumping-platform 4 near its axial line. With the platform level and the track unbroken line 13 holds the lock mechanism drawn outward and disengaged from the stop-bar, so that a car may pass thereover and onto the platform; but as soon as the platform tilts bracket 14 moves toward the lock mechanism, thus slacking line 13 and permitting weighted line 12 to turn arm 9 into locking position.` When thus locked, the runninggear of the next approaching car wedges upward on stop-bar 6 and is brought to a standstill. When the platform lowers, it disengages the lock, as will be understood. Thus the operation is entirely automatic and absolutely certain, it being impossible for, a car to pass the stop when the platform is tilted. No operator is required, and accidents due to carelessness of an attendant are avoided.

The improved stop and lock mechanism may be variously embodied and applied to other uses than that here shown without departing from the spirit and scope of the invention as defined by the appended claims.

I claim- 1. The combination of a movable stop device normally projected into car-stopping position and adapted when unlocked to be deflected by the car, and means for locking the device in car-stoppin position.

2. The combination o a vertically-movable normally raised car-stop adapted when unlocked to be depressed by a passing car, and means for locking the stop in raised position.

3. The combination of a vertically-movable car-stop adapted when unlocked to be depressed by a passing car,a counterweight for holding the stop normallyraised,a movable arm adapted to hold the stop against depression, and arm-operating means.

4. The combination of a car-stop ivoted between its ends to oscillate vertica ly and adapted when unlocked to be depressed by a passing car, a weight suspended from one end of the stop for holding its opposite end normally raised, and a locking device adapted to engage the normally raised portion of the stop for preventing its de ression.

5. The combination o a vertically-movable normally raised car-stop adapted when unlocked to be depressed by a passing car, and a laterally-swinging arm at one side of the stop adapted to move beneath the stop and prevent its depression.

IOO

6. The combination of a base having an openin a normally raised car-stop movable vertica ly in the opening and adapted when unlocked to be depressed by a passing car, and a lock device movable over the baseopening and beneath the stop to prevent depression of the latter.

7. The combination of a vertically-movable normally raised car-stop adapted when unlocked to be depressed by a passing car, a laterally-turning arm adapted to lock the stop in raised position, an operating-arm adapted to turn with the locking-arm, and actuating means connected to the operating arm.

'8. The combination of a car-track having ,V a movable section, a movable stop device normally projected into the path of a car and adapted when unlocked to be deflected by the car, a lock for holding the stop lagainst deflection, and lock-operating means con- 4 nected to the movable track-section, whereby when the latter is moved the lock is set.

9. The combination of a car-track having a movable section, a depressible car-stop I adapted when unlocked to be depressed by a passing car, a lock device for the sto and a connection between the loc-k and te movable track-section operatin to s'et the lock1 upon movement ol the trac section and rel lease the same upon return of 4the track-section to normal position.

110. The-combination of a Icar-track having l a movable section, a movable car-stop adapted when unlocked to be deiiected bya passing car, a lock device for preventing deflection of the stop, a weight connected to the lock for moving it into stop-engaging position, and a connection between the movable track-section and the lock for holding the latter disengaged from the stop when the movable track-section is in normal position.

1l. The combination yof a car-track having a tilting section, a movable `car-stop adapted when unlocked to be `deflected by Aa passing car, a lock for preventing ldepression of the stop, and lock-'actuating means connected to and controlled by the movement vof said track-section.

l2. The combination of a car-track having va tilting section, la normally raised car-stop adapted, when unlocked t'o be depressed by a passing car, a lock device for the stop to prevent its depression, a weight connected 'to said device for drawing i't into stop-locking position, and Ia connection between the tiltin track-section Iand the lock 'operating'lto ho d the latter disengaged from vthe 4stop while the tilting -section is in normal position.

In testimony whereof I my signature in presence Aof two witnesses.

JAMES S. PATES.

Witnesses:

J. M. Nnsnrr, ALEX. S. MABON. 

